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1·Neutral hydrogen emits radiation on a characteristic 21cm wavelength, while ionised hydrogen does not.

中性氢辐射出离子化氢所没有的特有的21厘米波长。

2·Neutralhydrogen emits radiation on a characteristic 21cm wavelength, while ionisedhydrogen does not.

中性氢辐射出离子化氢所没有的特有的21厘米波长。

3·The telescopes sift through the background cosmic radiation to find spots where it has been slightly perturbed as it passes through extremely hot gas, a hallmark characteristic of galaxy clusters.

南极天文台三大观测宇宙的天文台之一，旨在检测由宇宙大爆炸而产生的大量存在于微光辐射中的扭曲现象，利用天文望远镜对宇宙射线背景进行筛选，再利用星系群的特点确定一个点，即当宇宙射线穿过极热气体时会产生轻微混乱，混乱的那一刻就是所要找的那个点。

4·Japanese culture sprouted under the strong radiation of Chinese culture, has already take the characteristic of parent's culture unavoidably.

在汉字文化的强烈辐射下萌发的日本文化，也就不可避免地带上母体文化的特征。

5·This paper focuses on light scattering and radiation characteristic of target and environment.

本文主要研究目标与环境的光散射辐射问题。

6·It introduced the characteristic, Treatment state, and harm of nuclear waste, especially described the principle of Radiation-resistant microbe and state of doing harmless treating of nuclear waste.

介绍了核废料的处理状况、特点及危害，重点介绍了微生物抗辐射的机理及在核废料无害化处理方面的应用状况。

7·So, the effective target of harmonic radar is the nonlinear target with harmonic radiation characteristic.

因此对于谐波雷达而言，具有谐波辐射特性的非线性目标是有效目标。

8·The scatter theory is managed to analyze and compute the microwave radiation characteristic of metal target. And the actual measurement shows that the method is feasible.

运用散射理论对金属目标的微波辐射特性进行了分析和计算，然后进行实际测量，对比结果的误差，证明此测量方法可行。

9·The infrared radiation characteristic is the important basis for detection and identification of space target.

空间目标的红外辐射特性是对空间目标进行探测与识别的重要依据。

10·The results indicated that the degree and characteristic of radiation damage were variable under different irradiation conditions and the somatic cell responses induced by irradiation were reversible.

结果表明，在不同照射条件下辐射损伤的程度和特性不一，由辐射所诱发的体细胞效应大多数是可以恢复的。